Prep + Prime Moisture Infusion by MAC Cosmetics is a fast-absorbing, refreshing hydrating serum designed to prepare the skin for makeup application. Its lightweight formula delivers an intensive boost of lightweight moisture, creating a smooth, luminous canvas for foundation or concealer. This cream delivers essential hydration, helping skin maintain its moisture balance throughout the day. It is ideal for use as a daily moisturizer or as a priming step before applying any complexion product to enhance longevity and finish.